Sciweavers

LPNMR
1999
Springer
14 years 3 months ago
On the Role of Negation in Choice Logic Programs
We introduce choice logic programs as negation-free datalog programs that allow rules to have exclusive-only (possibly empty) disjunctions in the head. Such programs naturally mod...
Marina De Vos, Dirk Vermeir
LPNMR
1999
Springer
14 years 3 months ago
Annotated Revision Programs
Abstract. Revision programming was introduced as a formalism to describe and enforce updates of belief sets and databases. Revision programming was extended by Fitting who assigned...
V. Wiktor Marek, Inna Pivkina, Miroslaw Truszczyns...
LPNMR
1999
Springer
14 years 3 months ago
Representing Transition Systems by Logic Programs
This paper continues the line of research on representing actions, on the automation of commonsense reasoning and on planning that deals with causal theories and with action langua...
Vladimir Lifschitz, Hudson Turner
LPNMR
1999
Springer
14 years 3 months ago
A Comparison of Sceptical NAF-Free Logic Programming Approaches
Recently there has been increased interest in logic programming-based default reasoning approaches which are not using negation-as-failure in their object language. Instead, defau...
Grigoris Antoniou, Michael J. Maher, David Billing...
LPAR
1999
Springer
14 years 3 months ago
Practical Reasoning for Expressive Description Logics
Abstract. Description Logics (DLs) are a family of knowledge representation formalisms mainly characterised by constructors to build complex concepts and roles from atomic ones. Ex...
Ian Horrocks, Ulrike Sattler, Stephan Tobies
LPAR
1999
Springer
14 years 3 months ago
Extensions to the Estimation Calculus
Abstract. Walther’s estimation calculus was designed to prove the termination of functional programs, and can also be used to solve the similar problem of proving the well-founde...
Jeremy Gow, Alan Bundy, Ian Green
LPAR
1999
Springer
14 years 3 months ago
Proofs About Lists Using Ellipsis
In this paper we explore the use of ellipsis in proofs about lists. We present a higher-order formulation of elliptic formulae, and describe its implementation in the λClam proof ...
Alan Bundy, Julian Richardson
LPAR
1999
Springer
14 years 3 months ago
A Partial Evaluation Framework for Curry Programs
In this work, we develop a partial evaluation technique for residuating functional logic programs, which generalize the concurrent computation models for logic programs with delays...
Elvira Albert, María Alpuente, Michael Hanu...
LOPSTR
1999
Springer
14 years 3 months ago
Roles of Program Extension
Abstract. A formal and effective approach to the extension of the computational behaviour of logic programs is presented. The approach builds upon the following concepts. The exte...
Ralf Lämmel, Günter Riedewald, Wolfgang ...
LOPSTR
1999
Springer
14 years 3 months ago
Annotations for Prolog - A Concept and Runtime Handling
Abstract. A concept of annotations for rendering procedural aspects of Prolog is presented, built around wellknown procedural concepts of Standard Prolog. Annotations describe prop...
Marija Kulas